<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
  <style>
    .nav {
      background: url("images/背景图片的位置.png");
      width: 932px;
      height: 653px;
      font-size: 653px;
      text-align: center;
    }
    .nav:hover{
        background: url("images/背景图片的位置2.png");
        width: 932px;
        height: 653px;
        font-size: 653px;
        text-align: center;
    }
  </style>
</head>
<body>
<a class="nav" href="#">啊啊啊</a>
</body>
</html>